I've seen the stuff done by Johnny Chung Lee before and was impressed 
with what he's come up. I certainly would possible to adapt Remote 
Buddy to support such experimental setups, but I don't believe there 
are enough users out there that are ready to build such a setup, 
including building their own hardware (strong IR "pen" that can be 
switched on and off, too) and are ready to accept the limitations of 
such a setup (you may not stand in front of your pen and thus had to 
write "from the side") as that I could justify to invest the time in 
the development of such a feature when my development schedule is 
already totally packed (with stuff that almost all Remote Buddy users 
will directly benefit from) for many, many months to come. Sorry.

Best regards, 
Felix